#include<iostream>
#include<cstdio>
using namespace std;
int main(){
    int w,l;
    while(cin>>w>>l){
        double o=l*1.0/100;
        double temp=w*1.0/(o*o);
        if(temp<18.5)cout<<"Underweight"<<endl;
        else if(temp<=23.9)cout<<"Normal"<<endl;
        else if(temp<=27.9)cout<<"Overweight"<<endl;
        else cout<<"Obese"<<endl;
    }
    return 0;
}
